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Development of a Two-Layer Secure IoT Locker System Using e-KTP RFID and Mobile OTP via Blynk Platform Ummu Handasah; Ryandika Afdila; Arman Sani; Rizky Hendrawan; Muhammadin Hamid
Journal of Technomaterial Physics Vol. 7 No. 2 (2025): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v7i2.22170

Abstract

The growing demand for safe storage in public places has highlighted the flaws of single-factor authentication methods such as RFID, which are vulnerable to cloning. This study solves these security weaknesses by building and implementing a safe, low-cost IoT locker with a strong two-factor authentication (2FA) mechanism. The suggested method combines Indonesia's national ID card (e-KTP) for initial RFID-based access with a dynamic One-Time Password (OTP) sent to the user's smartphone via the Blynk IoT platform. The NodeMCU ESP8266-based prototype underwent extensive reliability, performance, and security testing. The results showed that both e-KTP and OTP validation were 100% accurate. The performance research revealed an average OTP delivery time of 5.6 seconds and a total access time of 28.2 seconds. Crucially, security analysis confirmed that the required second factor (OTP) effectively prevented unauthorized access even when the e-KTP was cloned. This study confirms a realistic and scalable two-factor authentication system that considerably increases locker security over single-factor techniques.
Co-Authors An-nisa, Nurul Andik Bintoro Arman Sani Badriana, Badriana Bakti Viyata Sundawa Batubara, Febrin Aulia Charla Tri Selda Manik Charla Tri Selda Manik Charla Tri Selda Manik Daniel Halomoan Saragi Napitu Elferida Hutajulu Eriansyah Saputra H Habib Muharry Y Habib Muharry Yusdartono Habibi Daulay, M. Sukri Indrayadi M. Sukri Habibi Daulay MAKSUM PINEM Manik, Charla Tri Selda Michael Stevano Sinurat Morlan Pardede Morlan Pardede - Muhammad Sukri Habibi Daulay Muhammad Sukri Habibi Daulay Muhammadin Hamid Mutiara Widasari Sitopu Mutiara Widasari Sitopu Mutiara Widasari Sitopu Nasution, Tuti Adi Tama Ninca Ginting Nur Adilah Nur Adilah Nur Adilah, Nur Priyulida, Fitri Priyulida, Fitria Rizky Hendrawan Ryandika Afdila Ryandika Afdila, Ryandika Samuel Gerardo Simanjuntak Sinurat, Michael Stevano Suherman Suherman Syamsiar, Syamsiar Tania Alda Waldemar Banurea, S.T., M.T. Widasari Sitopu, Mutiara